I believe you have something known as an "Insane object" in your VI.
See this article:
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P9QYSA0&l=en-US
That article covers a technique you can sometimes use if you can still open the VI somehow.
Did this VI call any other VIs? Or use any type definitions? If so, you could try isolating this VI so it can't find those dependencies and there is a tiny chance it might finish loading because whatever is causing the crash doesn't happen when the dependencies aren't there.
If you can't even open it at all even trying that, then... yeah. Nothing you can do. Restore from backup or start over fresh.
